41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
import base64
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import uuid
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import six
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from django.core.files.base import ContentFile
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from rest_framework import fields, serializers
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from . import api_errors
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class SlugCreatedRelatedField(serializers.SlugRelatedField):
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def to_internal_value(self, data):
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return self.get_queryset().get_or_create(**{self.slug_field: data})[0]
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class Base64FileField(fields.Field):
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def __init__(self, *args, **kwargs):
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self.max_size = kwargs.pop('max_size', 0)
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super(Base64FileField, self).__init__(*args, **kwargs)
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def get_max_size(self):
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if hasattr(self.max_size, '__call__'):
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return self.max_size()
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return self.max_size
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def to_internal_value(self, data):
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if isinstance(data, six.string_types):
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# base64 encoded image - decode
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name = uuid.uuid4()
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try:
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content = base64.b64decode(data)
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except ValueError:
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raise api_errors.APIError('NOT_BASE64')
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max_size = self.get_max_size()
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if max_size and len(content) > self.get_max_size():
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raise api_errors.APIError('TOO_BIG', limit=str(self.get_max_size()))
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data = ContentFile(content, name=name)
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else:
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raise api_errors.APIError('NOT_STRING')
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return data
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